Molecular Weight Calculator

Average formula/molar mass and elemental mass fractions using CIAAW 2024 abridged standard atomic weights; not isotope-specific or sample-specific mass.

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Result

Enter your values and run the tool to see your result.

How to use this tool

Check the units, enter your values, and run the tool. Results follow the assumptions and method below.

References

https://ciaaw.org/abridged-atomic-weights.htm
https://openstax.org/books/chemistry-2e/pages/3-1-formula-mass-and-the-mole-concept